Nic (Annette Bening) and Jules (Julianne Moore) have been happily together for 20 years with two children, with Nic conceiving Joni (Mia Wasikowska) and Jules conceiving Laser (Josh Hutcherson) from the same anonymous sperm donation. Joni has just turned 18, meaning she can now contact her and Laser’s father, which Laser persuades her to do unknown to their mums. Their dad turns out to be Paul (Mark Ruffalo) who is a chill, happy go lucky guy running a restaurant with locally grown produce and enjoying the female attention in his life. Hearing from his children, previously unknown to him, is unexpected but exciting for him, and he becomes involved in the family’s lives more than Joni and Laser ever could have realised.